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Finding the Fourth Proportional to 666,706.76, 920,057.75 and 360,783.11

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Solution

The fourth proportional to 666,706.76, 920,057.75 and 360,783.11 is: 497,882.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,706.76 : 920,057.75 = 360,783.11 : x
  2. Step 2: Convert to fraction form
    666,706.76/920,057.75 = 360,783.11/x
  3. Step 3: Cross multiply
    666,706.76x = 920,057.75 × 360,783.11
  4. Step 4: Simplify right side
    666,706.76x = 331,941,290,020.40
  5. Step 5: Solve for x
    x = 331,941,290,020.40/666,706.76
  6. Step 6: Final answer
    x = 497,882.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.